analgesia
/ˌænælˈdʒiːzjə/noun
mass noun
1- Medicine the inability to feel pain【药】痛觉缺失。
1.1
- medication that acts to relieve pain镇痛药; 止疼剂。
词源
early 18th cent.: from Greek analgēsia 'painlessness'， from an- 'not' + algeein 'feel pain'.